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No, not for a private residence. They need a warrant for that. That's what the 4th Amendment is for. If they have probable cause a judge will give them a warrant.
I suggest you look up Exigent circumstance. If the CO believes you are destroying evidence, he or she has the right to enter and search without your consent, or a warrant.There are loopholes everywhere, and discretion and interpretation are debated in this regard all the time.
This discussion also calls another question to mind. Suppose you own a private pond and catch over the amount of what the state says is your bag limit, not daily limit ,but bag limit you have the fish in your freezer so possession is not a question. Are you in violation of the law? Who has the burden of proof to say where fish were caught? Remember DNR is excluded from 4Th amendment search and seizure laws and can check your freezer. The law doesn't address where you caught the fish but what you are in possession of.
I am aware of exigent circumstances. That applies when they are in hot pursuit of a felon, or if they believe there is imminent danger of evidence being destroyed in a jailable offense. I guess a CO could try and make fish in a freezer fit in that box if he wanted to, but I doubt any would or have tried. Any lawyer would tee off on that one. I have heard this many times, but have yet to hear of a story where a CO entered a private residence to search someone's freezer for illegal fish without a warrant and I would challenge you to find such a thing.